Improvement in piano-stools



S. W. BABBITT.

Improvement in Pia1f1oStoo|s-y UNITED STATES# S. WILLIAM BABBITT, OFWEST MERIDEN, GONNEQTICUT.

IMPROVEMENT IN PIANO-STOOLS.

Specification forming part of Letters Patent No.129,510, dated July16,1872.

SPEorFIcA'rIoN.

To all whom it may concern:

Be it known that I, S. WILLIAM BABBITT, of West Meriden, in the-countyof New Haven and State of Connecticut, have invented a new and usefulImprovement in Piano-Stool and I do hereby declare that the following isa full and exact description of the same, reference being had to theaccompanying drawing and to the letters of reference marked thereon.

This invention has for its object the furnishing of` a suitable supportfor the back ofa person using a piano-stool; and consists mainly in thecombination of a plate rigidly secured to the standard of the stool,with a detachable back and its connections, as will be fully describedhereinafter.

In the drawing, Figure 1 represents a side elevation of a piano-stoolhaving my improved device attached thereto; Fig. 2, a perspective viewof the frame which supports the back 5 and Fig. 3, a perspective view ofthe plate which rests upon the piano-stool standard.

To enableothers skilled in the art to make and use my invention, I willnow proceed to describe fully its construction and operation.

A represents the piano-stool, which is preferably constructed -in theusual well-known manner. B represents a plate adapted to rest upon thetop of the stool-standard, which plate is provided with a centralorifice, b, through which passes the screw of the seat, and with thesquare opening b1 upon one side of the center, which opening is adaptedto receive the arm of the adjustable back. The plate B is secured to thetop of the standard of the stool by means of the flanges b2 b2, forminga portion of the plate upon one side, and the independent clamp b3,which is held and adjusted by means of the setscrew b4 resting n theprojection b5, as shown.l C represents a frame having a horizontal arm,c, and vertical arms cl o2 pendent at each end of the horizontal arm,the former of which, c1, is adapted to rest when in place in the squareopening b1 of the plate, and the latter of which, cz, is adapted, bymeans of a square opening throughout its length, to receive the squarerod d attached to the back D, as shown. The arm c1 is provided also witha set-screw, c3, by means of which the rod attached is held at anydesired height. The frame C is further provided with an inclined arm,c4, attached to the lower end of the arm c2, and supported by thevertical brace c5, which arm is provided at its lower end with a curvedslot, c6, and upon one side with a pin, c. E represents a bar providedat vone end with a yoke, c, adapted to rest against the curved portionof the piano-stool standard, and at the other end with a slot, e1, asshbwn. This bar is attached to the frame C by means of a set-screw andnut, c2, which screw passes through the slot c1 in the bar E, and alsothrough the slot c6 in the frame C. The slot el also incloses the pinc7, as clearly shown in the drawing. i

The operation of myinvention is as follows: The plate A is first securedin place upon the top of the standard of the pianostool, the seat havingbeen removed for that purpose. When thus secured the back may be usedwhenever desired by simply catching the arm c1 of the frame into thesquare orifice b1 of the plate. The arm c1 and the orifice b1` being ofcorresponding rectangular form, the frame is rigidly held for turning toeither side. .To prevent undue strain upon the frame, and to hold itsecurely in place, the brace-bar E is so adjusted as to bear firmlyagainst the standard, as shown, this adjustment being readily made bymeans of the set-screw and slotted arm. The height ofA Y 1'. Thecombination of a plate removably f attached to the standard by means ofa set-Y and brace-bar E, as and for the purpose set. screw and clamp,with the detachable frame forth. I having an adjustable back, asdescribed. This specification signed and witnessed this 2. The plate B,constructed as described, 17th day of J une7 1872. with itsorices,anges, c1amp,and set-screw, in combination with the frame C withits arms, arranged as described, back D with its rod d,

Witnesses: S. WM. BABBITT.

CHARLES H. SHAW, FRANK S. FAY. j

